Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Fuel property evaluation of unique fatty acid methyl esters containing β-hydroxy esters from engineered microorganisms

Journal Article · · Fuel Communications

Unique fatty acid methyl esters (FAME) containing ..beta..-hydroxy esters were produced using an engineered microorganism by glucose fermentation. This study investigated the properties of the unique FAME mixture both neat and in blends with conventional diesel, as well as properties of ..beta..-hydroxy esters. The unique FAME blend contained relatively shorter-chain FAME (average fatty acid chain carbon number 14.6) with 58 % monounsaturated fatty acids and 9 % saturated and monounsaturated ..beta..-hydroxy acid chains. The unique FAME had significantly lower distillation T90 (321 °C versus 352 °C) and higher cetane number (56.7 versus 52) compared to soy biodiesel. Cloud points were within method repeatability. Unexpectedly (because of the lack of methylene-interrupted double bonds), the unique FAME had low oxidation stability (1.5 h) as determined by Rancimat induction period. Stability could be improved through addition of commonly used antioxidants. We speculate that monounsaturated ..beta..-hydroxy FAME may be the source of this instability. Blends with conventional diesel up to 50 vol% showed similar kinematic viscosity (within method repeatability) as blends of conventional FAME. The unique FAME had no effect on distillation T90 even at the 80% blend level. A 30 vol% blend into conventional diesel had a Rancimat induction period of only 2 h, very nearly the same as the neat unique FAME sample. The addition of antioxidants produced blends of acceptable stability. Based on an assessment of the properties of individual ..beta..-hydroxy FAME molecules, they have higher boiling point, higher cloud point, lower cetane number, and potentially lower storage stability than analogous FAME not having the ..beta..-hydroxy group. Removing them from the fuel product in the production process may result in a biodiesel product with superior properties to what is on the market today.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE; Exxon-Mobil Technology and Engineering Company
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
2428932
Report Number(s):
NREL/JA--4A00-86938; MainId:87713; UUID:552886e9-1fe1-4421-ac24-d24c89b71074; MainAdminId:73185
Journal Information:
Fuel Communications, Journal Name: Fuel Communications Vol. 19; ISSN 2666-0520
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (39)

Thermogravimetric analysis for boiling points and vapour pressure journal May 1996
Lipid oxidation: Mechanisms, products and biological significance journal December 1984
Extraction of Lipids from Municipal Wastewater Plant Microorganisms for Production of Biodiesel journal January 2007
The Effect of Natural and Synthetic Antioxidants on the Oxidative Stability of Biodiesel journal February 2008
A Comprehensive Evaluation of the Melting Points of Fatty Acids and Esters Determined by Differential Scanning Calorimetry journal June 2009
Biodiesel production from waste cooking oil: 1. Process design and technological assessment journal August 2003
Decarbonising ships, planes and trucks: An analysis of suitable low-carbon fuels for the maritime, aviation and haulage sectors journal February 2021
Properties of a new gasoline oxygenate blend component: 3-Hydroxybutyrate methyl ester produced from bacterial poly-3-hydroxybutyrate journal August 2010
Biodiesel production by in situ transesterification of municipal primary and secondary sludges journal February 2009
Evaluation of alkyl esters from Camelina sativa oil as biodiesel and as blend components in ultra low-sulfur diesel fuel☆ journal January 2010
Renewable fuels from algae: An answer to debatable land based fuels journal January 2011
The potential of sustainable algal biofuel production using wastewater resources journal January 2011
A comprehensive chemical kinetic combustion model for the four butanol isomers journal June 2012
Effect of the β-hydroxy group on ester reactivity: Combustion kinetics of methyl hexanoate and methyl 3-hydroxyhexanoate journal December 2023
Storage stability and ageing effect of biodiesel blends treated with different antioxidants journal January 2011
Vapor pressure and normal boiling point predictions for pure methyl esters and biodiesel fuels journal May 2005
Oxidation stability of blends of Jatropha biodiesel with diesel journal October 2011
Chemical compositions, properties, and standards for different generation biodiesels: A review journal October 2019
Evaluation of formulation strategies to eliminate the biodiesel NOx effect journal June 2005
Saturated monoglyceride effects on low-temperature performance of biodiesel blends journal February 2014
Long-term storage stability of biodiesel and biodiesel blends journal December 2014
Biodiesel and renewable diesel: A comparison journal June 2010
Review of biodiesel composition, properties, and specifications journal January 2012
Overproduction of free fatty acids in E. coli: Implications for biodiesel production journal November 2008
Water Contamination Impacts on Biodiesel Antioxidants and Storage Stability journal March 2023
Life Cycle Greenhouse Gas Emissions of Biodiesel and Renewable Diesel Production in the United States journal May 2022
Application of ( R )-3-Hydroxyalkanoate Methyl Esters Derived from Microbial Polyhydroxyalkanoates as Novel Biofuels journal April 2009
Lubricity of Components of Biodiesel and Petrodiesel. The Origin of Biodiesel Lubricity journal April 2005
Impact of Antioxidant Additives on the Oxidation Stability of Diesel/Biodiesel Blends journal June 2010
Estimation of Density of Biodiesel journal June 2014
Storage Stability of Biodiesel and Biodiesel Blends journal January 2010
Impact of Biodiesel Source Material and Chemical Structure on Emissions of Criteria Pollutants from a Heavy-Duty Engine journal May 2001
Sooting Tendencies of Oxygenated Hydrocarbons in Laboratory-Scale Flames journal March 2011
Microbial production of fatty-acid-derived fuels and chemicals from plant biomass journal January 2010
Stability of biodiesel, its improvement and the effect of antioxidant treated blends on engine performance and emission journal January 2015
Net-zero emissions energy systems journal June 2018
Engineering Escherichia coli for Biodiesel Production Utilizing a Bacterial Fatty Acid Methyltransferase journal September 2011
Thioesterase II of Escherichia coli Plays an Important Role in 3-Hydroxydecanoic Acid Production journal July 2004
An Experimental Investigation of the Origin of Increased NO x Emissions When Fueling a Heavy-Duty Compression-Ignition Engine with Soy Biodiesel journal June 2009

Similar Records

Fatty acid derived alkyl ether fuels for compression ignition
Patent · Mon Dec 06 23:00:00 EST 2021 · OSTI ID:1860135

Effect of molecular weights of fatty acid esters on cetane numbers as diesel fuels
Journal Article · Sat Jun 01 00:00:00 EDT 1985 · J. Am. Oil Chem. Soc.; (United States) · OSTI ID:6457864